Carborundum-dresser.



A. G. CHAMPAGNE & J. N. BRAHN.

v GARBORUNDUM DRESSER.

APPLICATION FILED MAYZ, 1911.

1,026,494. Patented May 14, 1912.

WITNE 88E 8 INVENIORJ fllpizome .6! Wm 7A$M W ATTORNEYS COLUMBIAPLANOGRAPH COq-WASHINGTON. n. c.

UTTE STATES PATENT OFFICE.

ALPHONSE CLARENCE CHAMEAGNE AND JOHN. NELSON BRAI-IN, 0F JERSEY. CITY,NEW J ERSEY.

CARBORUNDUlVlI-DRESSER. 1

To all whom 2'2, may concern Be it known that we, ALPHONSE C. CHAM-PAGNE and Joi-IN N. BRAI-IN, both citizens of the United States, andresidents of Jersey City, in the county of Hudson andState of NewJersey, have invented a new-and Improved Carborundum-Dresser, of whichthe following is a full, clear, and exact description.

Our invention is a dressing tool for renewing the surface of wheels usedby clentists in finishing fillings and grinding away teeth. Suchv wheelsare made of carborundum in practice, andthe: circumference of thesewheels becomes worn smoothafter ex.- tended use.

Our invention resides in an improved construction by means of which thenecessary degree of roughness .of the ,periphcries of such wheels can berestored, and

thus the period during which they can be.

employed considerably lengthened.

Reference is to be had to the accompanying drawings forming a part ofthis specification, in which the same characters of reference indicatethe same parts in all the views.

Figure 1 is a side elevation of our improved dressing tool; Fig. 2 is aview similar to Fig. 1, showing the head of the tool in section; andFig. 3 is a perspective view of a dressing tool.

Our improved dresser comprises a head 1 of metal, having a handle 2,which may be of wood or hardened rubber, or any other suitable material.In the top of the head 1 is'a recess 3, across which passes a pivot pin3', on which is mounted a roughening roller 1. This roller 4 has asuitable number of teeth or points on its periphery to cut or scratchthe surface of the wheel which is to be reformed, and the roller itselfmust of course be formed of good, hard steel to give the desired result.

At one side of the recess 8 containing the roller 4 is formed alongitudinal bore in the head '1, in which is mounted to havelongitudinal movement, a shank 5. The lower end of this shank isthreaded and passes across a recess 6 in the side of the head 1, whichcontains an adjusting nut 7 This adjusting nut receives the threadedinner end of the shank 5. By turning the nut 7, the shank 5 can be movedin or out, as required. Near the outer end of this shank is formed alongitudinal slot 5, which receives the Specification of Letters Patent.

Patented May let, 1912.

Application filed May 2, 1911. SeriaLNo. 624,552.

pin 3 prevents the withdrawal of the shank v5 from the head, thusobviating any danger of the parts getting separated and lost. On theouter end of the shank 5 is formed a head 8, and this head has a notch 9therein, which serves as a bearing for the stem 11 ofthe wheel 10.

To use our improved dresser when a grinding wheel such as shown indotted lines at 10, has become worn smooth, the stem 11 thereof isconnected to the driving shaft of the dental engine, and the, shank5 is.ad jlusted to such a position that when the stem 11 rests in the notch9, the periphery of the wvheel 10 will be in contact with, theroughening roller 4. Theidental engine is then set in motion, rotatingthe wheel 10, and as this wheel rotates, its curved surface will} strikethe points or teeth on the rougheningroller 5, and its surface willtherefore be cut and scratched until the required degree of roughnesscan be obtained. The wheel is then ready for further use.

By means of our invention a polishing wheel of any size can be renewedat any time, simply by making the required adjustment of the head 8; andthe roughening roller can be replaced when worn out, simply by removingthe pivot pin 3.

Having thus described our invention, we claim as new and desire tosecure by Letters Patent:

1. A dressing tool for roughening and renewing the surfaces of grindingwheels, comprising a head having a roughening roller mounted therein,and having a bore formed transversely therein with respect to the axisof the roughening roller, a shank mounted in said bore, said shankhaving a longitudinal slot, and a pivot pin for said roughening roller,said pin being extended to pass through said slot to the opposite sideof said bore, to prevent the withdrawal of said shank from saidlongitudinal bore.

2. A dressing tool for roughening and renewing the surfaces of grindingwheels, comprising a head, a roughening roller mounted in said head, alongitudinal bore formed in said head and extending transversely of theaxis of said roughening roller, a pivot pin on which said rougheningroller is mounted, said pin having its inner end extending across saidlongitudinal bore, a shank mounted in said longitudinal bore and havinga longitudinal slot formed. therein to receive the end of the pivot pin,the inner end of said shank being threaded, and an adjusting nut carriedby the inner end of said shank, said adjusting nut being located in arecess in the head, so as to be operable from Without, said shank havinga bearing formed in its outer end to receive the operating shank of thepolishing wheel and support the same in position to contact With theroughening roller.

3. A dressing tool for roughening and renewing the surfaces of grindingWheels, comprising a head having a handle projecting therefrom andhaving a recess in one side thereof, a roughening roller mounted in saidrecess, and shaftbearing means comprising a shank carried by a boreformed in said head and projecting therefrom adjacent said roller andlongitudinally adjustable with respect thereto.

l-. A dressing tool for roughening and renewing the surfaces of grindingWheels, comprising rotary roughening means and a bearing member toreceive and support the shaft of the grinding Wheel in operativerelation to said roughening means, said bearing member being adjustable,and means forming a continuation of the axis around which the rougheningmeans rotates, for engaging the bearing member to limit the amount ofadjustment thereof.

5. A dressing tool for roughening and renewing the surfaces of grindingWheels, comprising a head having rotary roughening means mounted thereinand having a bore, a bearing member adjustably mounted in said bore toreceive and support the shaft of the grinding Wheel in operativerelation to the roughening means, and means forming a continuation ofthe axis around which the roughening means rotates, and engaging thebearing member inside the bore to limit the amount of adjustment of saidbearing member and prevent the separation thereof from said head.

In testimony whereof We have signed our names to this specification inthe presence of two subscribing Witnesses.

ALPHONSE CLARENCE CHAMPAGNE. JOHN NELSON BRAHN.

Witnesses:

EDWIN J. DoNoHUn, ISAAC SMITH.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents.

Washington, D, C.

